Simultaneous study of the lower order harmonic and photoelectron emission from an atom in intense laser pulse  

作　　者：Yan Yan Fu-Ming Guo Jun Wang Ji-Gen Chen Yu-Jun Yang 闫妍;郭福明;王俊;陈基根;杨玉军(Institute of Atomic and Molecular Physics, Jilin University;Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University);Department of Physics and Materials Engineering, Taizhou University)

机构地区：[1]Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China [2]Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy（Jilin University）,Changchun 130012,China [3]Department of Physics and Materials Engineering,Taizhou University,Taizhou 318000,China

出　　处：《Chinese Physics B》2018年第8期219-223,共5页中国物理B（英文版）

基　　金：Project supported by the National Key Research and Development Program of China(Grant No.2017YFA0403300);the National Natural Science Foundation of China(Grant Nos.11774129,11274141,11627807,11604119,and 11534004);the Jilin Provincial Research Foundation for Basic Research,China(Grant No.20170101153JC)

摘　　要：We simultaneously investigate variations of a low order harmonic and photoelectron emission with an incident laser intensity by solving the time-dependent Schr6dinger equation in a momentum space. It can be found that, the intensity of low order harmonic and photoelectron are gradually enhanced with the increase of the laser intensity, when the laser frequency is not in resonance with the transition frequency between the laser-induced high excited states and the ground state. If the resonance occurs, the intensity of the lower order harmonic is reduced and the interference can be observed in the lower order photoelectron spectra.We simultaneously investigate variations of a low order harmonic and photoelectron emission with an incident laser intensity by solving the time-dependent Schr6dinger equation in a momentum space. It can be found that, the intensity of low order harmonic and photoelectron are gradually enhanced with the increase of the laser intensity, when the laser frequency is not in resonance with the transition frequency between the laser-induced high excited states and the ground state. If the resonance occurs, the intensity of the lower order harmonic is reduced and the interference can be observed in the lower order photoelectron spectra.

关 键 词：high-order harmonic generation above threshold ionization 

分 类 号：O4[理学—物理]